Hi we live in uk and with my son our first port of call was with our health visitor and then a development check and hearing check.
Referals were then made for an assessment with a speech and language therapist, who then refereed my son to the communication disorders clinic at the child development centre.
He was seen by a pediatrition who said it was pointing strongly to autism and he was put on the waiting list for an autism screening clinic.
He was assessed on numerous occasions by a specialist speech and language therapist who also visited my son at school.the whole process took a year and was extremely stressful although I guess they have to be thorough so ensure a correct diagnosis.
The not knowing and the waiting was worse than finding out he had autism, In the end I just needed to have an answer so that I could except the situation and ensure my son recieved the support he needed.